Radio apparatus



March 1 1927' A. F. SANFORD RADIO APPARATUS Original Filed Aug.2l, 1925 5 Sheets-Sheet 1 JMM auczmq 1,619,544 March 1927' A. F. SANFORD RADIO APPARATUS Original Filed Aug- 21, 1925 5 t .2

v I 1,619,544 March A. F. SANFORD 1 RADIO APPARATUS Ab E? r //Y I Y 1,619,544 March 1 1927' A. F. SANFORD RADIO APPARATUS n l Filed 21, 1925 5 Sheets-Sheet 4 8+ A AB 95 i l i c5 LNVLIfII/LW 06 C11 1 07 1 619,544 March 1 1927' A. F. SANFORDH RADIO APPARATUS o i i al Filed Aug.2l 1925 5 Sheets-Sh t 5 1 6-6, of Fig." 2, looking toward the left Patented Mar, 1, 1927.

UNITED STATES.

ALFRED F. SANFORD, OF KNOXVILLE,- TENNESSEE.

RADIO APPARATUS.

Application filed August 21, 1925, Serial No.- 51,637. RenewedOctober 7, 1928.

This improvement relates generally to apparatus intended to receive from radio send- .ing stations, and particularly to radioreceiving apparatus in which provision is made for forming arecord of positions of parts of the apparatus when those parts have been brought into tune with the sending apparatus at a chosen sending station. This apparatus comprises three tuning '10 shafts and a rotatable disc presenting a rec-' ord-receivin surface and mechanism associated with t e three tuning shafts and said disc, whereby the operator is guided in making a record on said disc after the three tuning shafts have been turned to bring them 3 -3, of Figs. 1 and 2, looking towardthe Fig. 4 is an upright section on the line, H, of Figs. -1 and 2, looking toward the right;

Fig. 5 is an upright'section-on thefline, 5-55, of Figs. 1 and 2, looking toward the right Fig ,6 is an upright sect-ion on the'line,

Fig. 7 is an upright section on the. line,

77, of Fig. 2, looking toward the left,

" Fig. 8 is an upright section on the line,

88, of Figs 6 and 7, looking towardthe' Fig. '9 is a sectionqon' the line, 99, of

Fig. 2, looking in the directionof the arrow.

Referring to the drawings, A is the main 4 front wall; A is the base; A is the top wall; A is the right hand 'end wall A is the lefthand end wall.

Three tuning shafts,'-B, C and D, are arranged in the same horizontal plane and exand tend through the front wall, A, and project forward through that wall. The tuning shaft, B, rests in abeanng, B which'extends through the wall, A, and is fixed insaid wall. At the rear of said bearing, a

t collar, B surrounds said shaft and is fixed son. The spurgear wheel, E meshes with thereto by a set screw, 13*, and rests against sald bearing. At the front of saidbearing, the hub of a cog wheel, B, surrounds and is fixed to said shaft. I

Above the shaft, B, is a horizontal transmission shaft, E, resting in a bearing, E

which extends through and is seated on the front wall, A. The rear end of said shaft extends through said bearing. A retaining collar, E surrounds and is fixed to saidshaft by a set screw, E and rests against the adjacent end of said bearing. Immediately at the front of said bearing, the hub of a spur gear wheel, Eflsurrounds and is fixed to said 7 shaft. Immediately at the front of said hub, the shaft, E, is expanded to form a small disc,E On the outer face of said small disc is seated a large disc, E, said disc being centrally apertured to receive the adjacent end of the shaft,

Screws, E extend through the disc, E, in- I to the disc, E whereby the disc, E, is o1ned to the'shaft, E, for rotation in unia small idle spur gear wheel, E", which 1'0- 7 tatably surrounds the fixed shaft, E", which rests infa horizontal bearing, E, which is supported on the front face of the wall, A.

The wheel, E meshes with the spur gear wheel,'B, which as above stated,' .is fi d o the tuning shaft, B, v

It willnow be understood that the rim of the large disc, E, maybe grasped by the hand of the'operator for turning said disc with the shaft, E,in the bearing, E and that turning of that shaft will cause the turning of the idle wheel, E and the spur car wheel, B, and the tuning shaft, B.v g

The spur gear wheelsfE and B, are prefer:

ably of different sizes,- the wheel, jE, being.

the smaller, in order that the large d1sc,'E may undergo inorethan a half rotationdur ing the half rotation usually imparted to such a tuning shaft. The. ratio of the wheels, E and 13, as shown inthe drawpose of this is to make available :a large record-receiving surface." 7 p n At the right and at the left of the disc, a bracket, A extends forward from the front face of the front wall, A, a trifle forward of the plane of the front face of the disc. A face plate, A", extends hor zontally across the front face of the disc and across the brackets, A and is secured to said brackets by screws, A.

The tuning shaft, C, rests in a bearing, C, which extends through and is fixed in the front wall, A. At the rear of the bearing, G a collar, C surrounds the shaft, C, and is secured thereto by means of a set screw, C and rests against the bearing, C The shaft, C, projects forward far enough. to be surrounded by the spur gear wheel, C. A set screw, C binds said wheel to the shaft, 0. (See Figs. 4 and 5.) The wheel, C meshes with an idle spur gear whe'el, C,

i which is held rotatably on the shaft, C",

which is supported on the front face of the wall, A. The idle wheel, C, meshes with a larger spur gear wheel, G which surrounds and is fixed to the rock shaft, C", which rests rotatably in the bearing, G which is seated in the front wall, A. The shaft, C, extends forwardbeyond the disc, E. .A hand knob, G surrounds and is fixed to the outer end of the shaft, C

Turning the knob, C will cause the turning of the shaft, C the spur gear wheel, C the idle spur gear wheel, C the spur gear wheel, 0 and the tuning shaft, C.

The face plate, A, has a curved slot, A concentric to the shaft, C. Below said slot is a retaining bar, A, which is spaced from the front face of the face plate. Parallel to and in front of and spaced from the bar, A", is a similar retaining bar, A". The hand knob, C, has a hub, C ,'to the rear face of which is secured a pointer, C, which extends upward through the spacebetween the retaining bars, A and A, saidspaces being large enough to allow said pointer to freely move toward the right or toward the left, parallel to the face of the large disc, E The pointer, C is long enough to stand in front of theslot, A and the upper end of the pointer is bent rearward to approach said slot. I

The tuning shaft, D, rests in a bearing, D which is seated in the .front wall, A. At the rear of said bearing, said shaft is surrounded. by a collar, D which is secured by a set screw, D and rests against the adjacent end of the bearing.

The forward end of the shaft, D, projects through said bearing. A spur gear wheel, D surrounds and is fixed to the outer end of said shaft and rests "against the bearin D A rack bar, D, extends slidably throu ll a bracket, D seatedon the front face of t e front wall, A, and across the wheel, D, and has itsteeth directed downward into engage- 'ment with the teeth of said wheel.

Figs. 2, 6 and 7.) Said bar extends right "ward and slidably through'th'e bracket, D,

which is fixed on the front face of the wall, A, immediately at the right of the idle spur gear wheel, C. The downward directed .of the pointer, C, has a point, G.

1 pointer by takes a pencil or other writin teeth of the bar, D, meshwith the spur gear wheel, D which surrounds and is fixed to a, sleeve, D which loosely surrounds the rock shaft, C", at the front of the wheel, C The front end of the sleeve, D is expanded to form a disc, D To that disc is attached a pointer, D, the lower part of which is flat and apertured to extend around the rock shaft. The upper end of said pointer eX- tends between the inner bar, A, and the face plate, A", said space being large enough to allow the disc pointer to moverightward or leftward. The-end of said pointer is provided with a notch, D and said end is bent rearward into said slot, A The upper end The lower end of the pointer, D is extended forward and then upward to support a ring- 'form hand knob, D surrounding and free from the hub, C, of the hand knob, C.

It will now be understood that partial turning the hand knob, D, to turn the sleeve, D, will cause the partialturning of the spur gear wheel D which will cause the endwise movement of the rack bar, D

which will cause a partial turnin of the spur gear wheel, D, and the shaft,

The operation is as follows To place this apparatus into tune with a chosen sending station, the tuning shafts, B, C and D, are to be turned until tuning has been attained. These shafts may be turned in any-order desired by the o erator. We will suppose-thatthe shaft, B, is to be tuned first. For this, the operator engages the edge of the large disc, E, and turns that disc until the shaft, B, has been turned into the required position. Then the shaft, C, is turned by engaging either the hand knob, C, or the po1nter,- C and turning the engaging member toward the right or left, whereby the gear wheels, C", C, C, and the tuning shaft, 0, are turned, untiL that shaft is in the desired position. M

Then the hand of the operator engages either they hand knob, D or the pointer D and turns that member toward the right or left, whereby the spur gear Wheel, D

will cause the endwise movement of the rack pointer has beenput into position, it may be held immovably while the other ismoved into position. Thus movement ofthe first frictional engagement with adj acent parts is avoided.

' When the three shafts have thus been brought into tuning position, the" operator instrument an uses the curved face p ate edge at the lower part of the s'lpt, A as a guide,

passing the pencil along said edge and across the ends of the pointers. The upper end of the pointer D, will cause a downward fold or notch in the pencil line, and the upper end of the pointer, C, will cause an inverted V-form fold of the linedrawn by the pencil. Then symbols identifying the sending station are written on the disc,

-, ng the rocking member with the other tun:

'tune with that sending station.

B, in the slot, A. The record thus made may include the initials and name and meter length of that sending station.

When'this apparatus is to be brought into tune with another sending station, the large disc, E, and the pointers, C and D (or the corresponding hand knobs?l are turned until the associated tuning s afts are in Then a record is placed as before on the part of the front face of the disc, E", which is expanded through the slot, A.

When this apparatus is again. to be brought into tune with the first sending station, the disc, E, is turned until the record ofthat station again appears in the slot, A. Then the two pointers are turned' to bring their endsoppos1te the part of that record previously made by the aid of those pointers. I

It is to be understood that the records may be placed directly on the disc, E, or on a sheet of paper or similar material temporarily placed on the face of the disc.

I claim as my invention: V

1. In an apparatus of the kind described, the combination of two tuning shafts, a

' movable member bearing a record-receiving surface, gearing connecting said member and one of said shafts, a stationary guide, a guide. movable along the stationary guide, a rocking member supporting the movable guide, and means operatively connecting the rocking member with the'other tuning.

shaft, substantially as described.

2. In an apparatus of the'kind described, the combination of two tuning shafts, a

movable member bearing a record-receiving surface, gearin connecting said member and one of sai shafts, a stationary guide, a guide movable along the stationary guide,

, ;a rocking member supporting the movable guide, and cog gearing operatively connecting shaft, substantially as described.

3. In 'an apparatus of the kind described,

"the combination of two] tuning shafts, a

I with the other tuning shaft, substantially as movable member bearing a record-receivin one of said s afts, a stationary guide, a

a rocking member supporting the-movable guide, and means'inc udmg a, rack-bar operatively connecting the rocking member described.

4. In an apparatus of the-kind described,

the combination of atuning shaft, a movable member bearing a record-receiving surface, gearing connecting said member and said shaft, two othertuning shafts, a stationary guide, two guides movable along the stationary guide, two rocking members:

one supporting one andthe otherv supporting the other of .the movable guides, and means connecting one of the rocking membars with one of said two tuning shafts, and

means connecting the other of the rocking members with the other of said two tuning shafts, substantially asdescribed.

5. In an apparatus of the kind described,

the combination of a tuning shaft, a movable member'bearing a record-receiving surface, gearing connecting said member and said shaft, two other tuning shafts, a sta tionary guide, two guides movable along the stationary guide, two rocking members on a common axial line one supporting one and the other supporting the other' of the movable uides, and means connecting one of the rocking members with one of said two tuning "shafts, and means connecting the other of the rocking members with the,

other of said two tuning shafts, substantially as described.

6. In an apparatus of the kind described, the combination of two tuning shafts, a rotatable member bearing a record-receiving surface, gearing connecting said member and one ofsaidshafts, a stationary guide, a guide movable along the stationary guide, a rocking member supporting the movable guide, andmeans operatively connecting the rocking member with the other tuning shaft, substantially as described. I

7. In an apparatus of the kind described,

the combination of two tuning shafts, a "rothe combination of two tuning shafts, a ro-.

tatable member bearing a record-receiving surface, gearing connecting said member and one of said shafts, a stationary guide, a guide moyable along the stationary guide, a rocking member supporting the movable g guide, and means including a rack-bar opersurface, gearm connecting said member and atively connecting the rocking member with the other tuning shaft, substantially as described.

9. Inan apparatus of the kind described,

the combination of a tuning shaft, a rotatable member bearing a record-receiving surface, gearing connecting saidmember and said shaft, two other tuning shafts, a stationary guide, two guides movable along the stationary guide, two rocking members one supporting one and the other supporting the other of the movable guides, and means connecting one of the rocking members with one of said two tuning shafts, and means connecting the other of the rocking -members with the other of said two tuning shafts, substantially as described.

10. In an apparatus of the kind described, the combination of a tuning shaft, a rotatable member bearing a record-receiving surface, gearing connecting said member and said shaft, two other tuning shafts, a sta-' tionary guide, two guides movable along the stationary guide, two rocking memberson a common axial line one supporting one and the other supporting the other of the movable guides, and means connecting one of the rocking members with one of said two'tuning shafts, and means connecting the other of the rocking members with the other of said two tuning shafts, substantially as described. Y

11. In an apparatus of the kind described, the combination of'two tuning shafts, a movable member bearing a record-receiving surface, gearing connecting'said member and one of said shafts, a stationary guide and rocking member, a pointer supported by said rocking member and reaching to the recording guide, a gear wheel concentric with and fixed to the rocking member, a rack bar intervening said gear wheel and the other tuning shaft, whereby the rocking of said pointer and said rocking member will cause the endwise movement of the rack bar and through the latter cause the turning of the other tuning shaft, substantially as described.

12. In an apparatus of the kind described, the combination of two tuning shafts, a movable member bearing a record-receiving surface, gearing connecting said member and one of said shafts, a stationary guide, a retaining member,- a rocking member, a pointer supported by said rocking member and reaching between the guide and the retaining member, agear-wheel concentric with and fixed to the rocking member, a rack bar intervening saidgear wheel and the other tuning shaft, whereby the rocking of said pointer and said rocking member will cause the endwise movement of the rack bar and.

through the latter cause the turning of the other tuning shaft, substantially as detwo tuning shafts and gearing intervening the other of said rocking members and the other of said two tuning shafts, substantially as described.

14. In an apparatus of the kinddescribed, the combination of a tuning shaft, 'a movable member bearing a record-receiving surface, means connecting said member and said shaft, a stationary guide, two rocking members on the same axial line, two pointers reaching to the guide and each being supported on oneof the rocking members, two other tuning shafts, gearing intervening one of the rocking members and one of said two tuning shafts and gearing intervening the other of said rocking members and the other of said two tuning shafts, substantially as described.

15. In an apparatus of the kind described, the combination of two tuning shafts, a mov able member bearing a record-receiving surface having an orbital path, gearing connecting said member and one of said shafts, a stationary guide adjacent said record-receiving surface, a pointer movable along the stationary guide, a rocking member supporting the movable pointer, and means operatively connecting the rocking member with the other tuning shaft, substantially as described. w

16. In an apparatus of the kind described, the combination of two tuning shafts, a movable member bearing a record-receiving surface having an orbital path, gearing connecting said member and one of said shafts to cause said member to traverse said path at a velocity greater than the turning velocity of said tuning shaft, a stationary guide adjacent said record-receiving surface, a pointer movable along the stationary guide, a rocking member supporting the movable pointer, and means operatively connecting the rocking member with the .other tuning shaft, substantially as described 17. In an apparatus of the kind described, the combination of two tuning shafts, a movable member bearing a record-receiving surface having an orbital path, gearing connecting said member and one of said. shafts to cause said member to traverse said path at twice the velocity of said tuning shaft, a

stationary guide adjacent said record-receiving surface, a pointer movable along the stationary guide, a rocking member S111)".

porting the movable pointer, and means op eratively connecting the rocking member with ,the other tuning shaft,:substantially as described.

18. In an apparatus of the kind described, the combination of two tuning shafts, a rotatable disc bearing a record-receiving surface, gearing connecting said disc and one of said shafts for rotating the disc faster than the rotation of said shaft, a stationary guide adjacent said disc, a pointer movable ber supporting'the polnter, and means operatively connecting therocking member with the other tuning shaft, substantially as -described.

19; In an'l apparatus of the kind described, the combinationof two tuning shafts, a 'mov- .able member bearing a record-receiving sur- .face, two guides movable independently of each other along the record-receiving surface transversely to the course of movement of the adjacent part of said surface, a rock? ing member supporting one of said guides,

another rocking member supporting the other of-said guides, means connectinv one of said rocking members with one'of said tuning shafts, and means connecting the other of said rocking members with the other of said tuning shafts, substantially as described. i

20. In an apparatus of the kind described, the combination of two tuning shafts, a re.- tatable member bearing a record-receiving surface, two guides movable independently of each other along the record-receiving surface transversely to the course of movement of the adjacent part of said surface, a rocking member supportingone of said guides,v

another rocking member supporting the other of said guides, means connecting one of said rocking members with one of said tuning shafts, and means connecting the other of said rocking members with the other of said tuning shafts, substantially as described.

21.-In an apparatus of the kind described, the combination of two tuning shafts, a movable member bearing a record-receiving surface, means connectin said member and one of said shafts, a gui e movablealong and transversely to the movement of said record member, a rocking member in operative relation with said guide, and means-operatively connecting the rocking member with the other tuning shaft, substantially as descrIibed.

n testi on name, this l8th one thousand nine undred and twenty-five.

ALFRED F. SANFORD.

whereof I have signed da of August, in the year 

